Function addEdgeToBPoly

TheForceEngine/TFE_Polygon/polygon.cpp:824–860

	}

	bool addEdgeToBPoly(Vec2f v0, Vec2f v1, BPolygon* poly)
	{
		// Discard degenerate edges.
		if (vtxEqual(&v0, &v1))
		{
			return false;
		}

		BEdge newEdge = {};
		newEdge.v0 = v0;
		newEdge.v1 = v1;

		const s32 newEdgeIndex = (s32)poly->edges.size();
		const s32 edgeCount = (s32)poly->edges.size();
		BEdge* edge = poly->edges.data();
		for (s32 e = 0; e < edgeCount; e++, edge++)
		{
			if (vtxEqual(&v0, &edge->v0) && vtxEqual(&v1, &edge->v1))
			{
				return false;
			}

			if (vtxEqual(&v1, &edge->v0))
			{
				newEdge.nextEdge = e;
				edge->prevEdge = newEdgeIndex;
			}
			if (vtxEqual(&v0, &edge->v1))
			{
				newEdge.prevEdge = e;
				edge->nextEdge = newEdgeIndex;
			}
		}

		poly->edges.push_back(newEdge);
		return true;
	}

	struct Intersection
	{